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Apache24c2 - A Tribute to Prandtl 1933 Bell Spanload
Apache24c2 - A Tribute to Prandtl 1933 Bell Spanload

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Apache24c2 - A Tribute to Prandtl 1933 Bell Spanload
Description: This is Apache24c2, a 2024 Science Olympiad Flight event Div. C design. In addition to no-dihedral and no-wingtipplate on all Apache24* designs, Apache24c2 adapted a significant wash-out angle, not wash-in, at wingtips. This idea came from Prandtl's 1933 paper (and as illustrated by NASA experimental flying wings since 2016), where it essentially says a bell-shape spanload (lift distribution) has less induced drag than the famous elliptical spanload that is deployed on many airplanes.

See a YouTube video for one of Apache24c2's high-flying flights:

https://youtu.be/5QHRFWFHO0I

To build Apache24c2 with better accuracy, a 3d printed wing jig is uploaded to Thingiverse at:

https://www.thingiverse.com/thing:6581434

Apache24c2 is an advanced design with many details. For beginners, please check out Apache24s design at

https://youtu.be/duHd2XiFhw8
https://www.thingiverse.com/thing:6313844

Fifteen Apache24s flew successfully at a 2023 summer workshop. A derived Apache24s5 placed third at Southern California State at Caltech on 4/6/2024.

Please feel free to contact me at aero.martin @ yahoo .com if there is any question I can help with.

Cheers!

-AeroMartin
Keywords: Apache23, Apache24s, Apache24c2, Design plan, Full-size plan, Building plan, Science Olympiad, SciOly FLIGHT, SoCal Science Olympiad 2024 FLIGHT Workshop, Science Olympiad FLIGHT, SO FLIGHT
Date: 04.20.2024 05:23
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Downloads: 33
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File size: 103.2 KB
Added by: briskaop

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